<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <script src="lib/jquery-3.3.1.min.js"></script>
</head>
<body>
    <p>hello2</p>
    <p>good</p>
    <p>world</p>
    <div>
        <p>test</p>
    </div>
    <div>
        <h1>h1</h1>
    </div>
    <script>
        $("p:contains(test)").css({color:"red"})
        $("div:has(h1)").css({color:"green"})
    </script>
</body>
</html>